Reynolds (back) is listed as questionable for Sunday's game against the Giants, Tim Twentyman of the Lions' official site reports.
Reynolds returned to practice Thursday as a limited participant before sitting out again Friday to close out the week. He thus appears no better than 50/50 ahead of Sunday's 1:00 p.m. ET kickoff, and there's also the possibility of added target competition with DJ Chark (ankle) recently designated to return from injured reserve.